<html>
  <head>
  <script src="../../viewport.js"></script>
  <script src="../../tilemap.js"></script>
  <script src="../../tileset.js"></script>
  <script src="demo.js"></script>
  <style>
    #myScreen {
      background-color: black;
    }
  </style>
  </head>
  <body onload="startDemo();">  
  <p>fps:<span id="fps">0</span> scroll_x:<span id="scroll_x">0</span> scroll_y:<span id="scroll_y">0</span> tile:<span id="tile_type">0</span></p>
  </body>
</html>
